Pipe and hose coupling



N. YL ROBERTSON ANO lII. Moss.

PIPE'AND HOSE COUPLING.

APPLICATION EIIEO SEPT. 25. IQ'IO.

1,333,342. I Patented Mar. 9,1920.

l UNTTED sTATEs PATENT oEEioE.

NOEL YEO ROBERTSON AND HEnEEnT Moss, or JOrmNivE'sBnne, Tnarrsvnnn SOUTH f AFRICA.

PIPE AND HOSE GOUPLING.

Specification of Letters atent.

atented. llIar. 9, 1920.

Application filed September 25., 1918. Serial No. 255,612.

`pressure of fluid within the coupling. The

Object of the invention is to produce ka novel coupling of this kind'the connection and dis,

connection of which` can be effected rapidly and without the exercise of force.'

The accompanying drawing is a projected view partly in section of a coupling constructed according to this invention.

1 indicates a socket element formed with a socket 2. In the present instance this element is 'formed withl a threaded end 3 for v vvnation with a socket element providing a screwing it to a fixture. and with a hexagon ll for the application of a spanner-- f 5 is a spigot lelement adapted toenter the socket 2. This element may be constructed at the end 6 for connection to a hose.

At the forward end of the spigot element 5 is formed a flange 7 which approximately lits the socket 2. Behind said flange a resihent washer 8 of such external diameter p Y that when uncompressed it fits easily in the socket.

9 is a sleeve which is slipped over the spigot 5. It engages the back or .the washer 8 and is suitably secured to the socket ele-v ment 1 to -form an abutment for the washer to bear against. For thispurpose in the construction shown, it is engaged bythe internal flange 10 'of a' coupling-'sleeve 11. The latter is arranged to engage the socket element 1 by quick acting coupling means, such as internal pins 12 on the coupling sleeve which engage bayonet slots 13 formed in the socket element. The sleeves 9 and 11 may if desired be madeL integral. The coupling .sleeve is serrated on the outside as indicated at 14, to enable it to be. readily turned by'V hand when engaging the pins in the bayonet slots'. v

In use, the spigot 5 is slipped into the socket 2, and the sleeve 9 being in place, the coupling sleeve 11 is lcoupled to the socket clement 1. As all parts are perfectly free, these movements are made without difficulty. The flange 7 need vnot touch the bottom of the socket'and the spigot is free to move endwise in relation to the socket and the coupling sleeve. f

Upon fluid under pressure being admitted to the coupling, the unbalanced pressure on the end of the spigot forces the same back against the sleeve 9, which is held by the coupling sleeve 11. This pressure is transmitted through the washer 8, which is thereby compressed longitudinally and caused to expand into contact with the in ternal surface of the socket, so making a tight joint therewith. Upon the fluidfpresrsure kbeing removed, all parts become free again and may be disconnected with ease.

We claim, v

1. In a pipe or like coupling, the combisocket, a spigot element adapted to pass into the socket, and having an enlargement at its front end, a resilient washer positioned on the spigot behind l the 'enlargement and freely movable in the socket, and meansk connectible tothe socket `element by a quick acting coupling and engaging the back of the washer.

3. In a pipe or like coupling, the combination with a socket elementv lproviding a socket, a spigot element adapted to pass into the socket, and having an enlargement' at its frontend, a resilient washer positioned on the spigot behind the enlargement' and freely movable in the socket,`a coupling sleeveconnectiblevto the socket element and asleeve surrounding the spigot and held by said coumovement of said elements and th'eieby form pling sleeve agail'ist the back of the Washer. a. fluid tight joint between them.

l. A pipe or like coupling comprising ele- In testimony whereof We aix oui.l signa'- 10 ments mutually separable by pressure Within tures. Y v 5 the coupling, a device to limit separating v y movement of said parts and a resilient nnem-V NOEL YEO ROBERTSON. ber adapted to be compressed by separating v HERBERT MOSS. 

